"Sod's Law" is a popular saying that suggests if something can go wrong, it likely will. This concept reflects the idea that misfortune often strikes at the most inconvenient times. It is often used humorously to explain unexpected problems or mishaps in everyday life. The term is closely related to other expressions like Murphy's Law, which conveys a similar sentiment about the unpredictability of life. While not a formal law, it serves as a reminder to be prepared for the unexpected and to maintain a sense of humor when things don't go as planned.